<html>
    <head>
        <title>signup</title>
        <meta charset="utf-8">
    </head>
    <body>
        <h2>signup</h2>
        <form action="./signup_do" method="get">
            username: <input type="text" name="username">
            password: <input type="password" name="password">
            <input type="submit" value="submit">
        </form>
    </body>
</html>